/* ============================================================
   KVM Joaillerie — Product Page CSS — White Page Design
   ============================================================ */

.kvm-product-page {
    padding-top: 76px;
    min-height: 100vh;
    background: #fff;
}

/* — Layout — */
.kvm-product-layout {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-md);
}

@media (min-width: 768px) {
    .kvm-product-layout {
        display: grid;
        grid-template-columns: 60% 40%;
        gap: var(--space-xl);
        padding: var(--space-lg) var(--space-md);
    }
}

/* — Gallery — */
.kvm-gallery { position: relative; }
.swiper { width: 100%; }

.swiper-slide {
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background: var(--page-subtle-bg);
    border: 1px solid var(--page-border);
    border-radius: var(--radius-sm);
}
.swiper-slide img { width: 100%; height: 100%; object-fit: cover; }

.swiper-pagination-bullet { background: rgba(20,36,30,0.2); opacity: 1; }
.swiper-pagination-bullet-active { background: var(--emerald); }

/* Video slide */
.kvm-video-slide { position: relative; cursor: pointer; }
.kvm-video-facade { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; }
.kvm-play-icon { width: 64px; height: 64px; border-radius: 50%; background: rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center; transition: background var(--transition-fast); }
.kvm-play-icon:hover { background: rgba(0,0,0,0.7); }
.kvm-play-icon svg { margin-left: 4px; color: #fff; }

/* — Product Info — */
.kvm-product-info { display: flex; flex-direction: column; gap: var(--space-md); padding-top: var(--space-md); }

@media (min-width: 768px) {
    .kvm-product-info { position: sticky; top: 100px; padding-top: 0; max-height: calc(100vh - 120px); overflow-y: auto; }
}

.kvm-product-name { font-family: var(--serif); font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 300; color: var(--ink); line-height: 1.1; }
.kvm-product-price { font-size: 1.125rem; font-weight: var(--fw-medium); color: var(--ink); }

/* — Size Selector — */
.kvm-sizes-label { font-size: var(--cap); color: var(--page-muted); margin-bottom: var(--space-xs); display: block; text-transform: uppercase; letter-spacing: 0.18em; }
.kvm-sizes { display: flex; flex-wrap: wrap; gap: var(--space-xs); }
.kvm-size-option { display: none; }

.kvm-size-label {
    display: flex; align-items: center; justify-content: center;
    width: 44px; height: 44px;
    border: 1px solid var(--page-border); border-radius: 50%;
    font-size: 13px; font-weight: var(--fw-regular); color: var(--ink);
    cursor: pointer; transition: all var(--transition-fast); position: relative;
}
.kvm-size-label:hover { border-color: var(--ink); }
.kvm-size-option:checked + .kvm-size-label { background: var(--emerald); border-color: var(--emerald); color: #fff; }
.kvm-size-label.out-of-stock { opacity: 0.3; cursor: default; text-decoration: line-through; }

.kvm-size-label::after {
    content: 'Taille indisponible'; position: absolute; bottom: calc(100% + 8px); left: 50%; transform: translateX(-50%);
    background: var(--ink); color: #fff; font-size: 11px; padding: 4px 8px; border-radius: var(--radius-sm);
    white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity var(--transition-fast);
}
.kvm-size-label.out-of-stock:hover::after { opacity: 1; }

/* — Add to Cart — */
.kvm-add-to-cart { margin-top: var(--space-xs); }

.kvm-atc-btn {
    display: block; width: 100%; padding: 16px;
    background: var(--emerald); color: #fff;
    font-family: var(--sans); font-size: var(--cap); font-weight: 500;
    letter-spacing: 0.2em; text-transform: uppercase; text-align: center;
    border: none; border-radius: 999px; cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
}
.kvm-atc-btn:hover:not(:disabled) { background: var(--gold); color: var(--ink); }
.kvm-atc-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.kvm-atc-btn.added { background: var(--color-success); color: #fff; }

/* — Accordion — */
.kvm-accordion { border-top: 1px solid var(--page-border); }
details.kvm-details { border-bottom: 1px solid var(--page-border); }

summary.kvm-summary {
    display: flex; justify-content: space-between; align-items: center;
    padding: var(--space-sm) 0; font-size: 14px; font-weight: var(--fw-medium);
    cursor: pointer; list-style: none; user-select: none; color: var(--ink);
}
summary.kvm-summary::-webkit-details-marker { display: none; }
summary.kvm-summary::after { content: '+'; font-size: 18px; font-weight: var(--fw-light); color: var(--page-muted); transition: transform var(--transition-fast); }
details[open] > summary.kvm-summary::after { content: '\2212'; }

.kvm-details-content { padding: 0 0 var(--space-md); font-size: 14px; line-height: 1.7; color: var(--page-muted); }
.kvm-details-content p { margin-bottom: 6px; }
.kvm-details-content strong { color: var(--ink); font-weight: var(--fw-medium); }

/* — Reassurance — */
.kvm-reassurance { display: flex; gap: var(--space-md); padding: var(--space-md) 0; border-top: 1px solid var(--page-border); }
.kvm-reassurance-item { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; text-align: center; font-size: 11px; color: var(--page-muted); line-height: 1.3; }

/* — Out of Stock — */
.kvm-out-of-stock-btn {
    display: block; width: 100%; padding: var(--space-md);
    background: var(--page-subtle-bg); color: var(--page-muted);
    font-family: var(--sans); font-size: 14px; font-weight: var(--fw-medium);
    text-align: center; cursor: not-allowed;
    border: 1px solid var(--page-border); border-radius: 999px;
}

/* — Sticky bottom bar (mobile) — */
.kvm-product-sticky-bar { display: none; }

@media (max-width: 767px) {
    .kvm-product-sticky-bar {
        display: flex; align-items: center; justify-content: center; gap: var(--space-sm);
        position: fixed; bottom: 0; left: 0; right: 0; z-index: 90;
        padding: 10px var(--space-md); background: #fff;
        border-top: 1px solid var(--page-border); font-size: 11px; color: var(--page-muted);
    }
    .kvm-sticky-bar-item { display: flex; align-items: center; gap: 6px; }
    .kvm-sticky-bar-sep { color: var(--page-border); }
    .kvm-product-page { padding-bottom: 44px; }
}

/* Back link */
.kvm-product-back { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--page-muted); padding: var(--space-md) var(--space-md) 0; transition: color var(--transition-fast); }
.kvm-product-back:hover { color: var(--ink); }